/* Base Styles for all screens - Mobile-first approach is generally best */
body {
    /* Subtle background texture/gradient for depth, similar to x.ai's dark background */
    background: radial-gradient(circle at 50% 10%, rgba(30, 30, 30, 0.4) 0%, rgba(0, 0, 0, 1) 100%);
    background-color: black; /* Fallback for older browsers */
    color: white;
    text-align: center;
    list-style-position: inside;
    /* Poppins is good, but for a more 'tech' feel, consider a modern sans-serif */
    font-family: "Poppins", "Helvetica Neue", sans-serif;
    /* Use a relative font-size on the body for better accessibility */
    font-size: 18px; /* Slightly larger base font for better readability */
    line-height: 1.6; /* Improve line spacing */
}

/* Typography Styles */
h1, h3 {
    /* Orbitron is excellent for the tech/space theme */
    font-family: "Orbitron", sans-serif;
    font-weight: 900;
    font-style: normal;
    line-height: 1.2; /* Tighter line height for headlines */
    /* Add a subtle text shadow for a glow effect, enhancing the futuristic feel */
    text-shadow: 0 0 5px rgba(0, 255, 207, 0.4);
}

h3 {
    padding: 30px 0px;
    font-size: 2.8rem; /* A bit larger for impact */
    /* Ensure the h3 color is the bright tech blue/cyan */
    color: #00ffcf;
}

h4 {
    font-size: 1.75rem; /* Slightly larger */
    font-weight: 700;
    line-height: 1.4;
}

h1 {
    /* Use 'clamp' for a fluid font size that is capped by a min/max value */
    font-size: clamp(36px, 12vw, 70px); /* Larger H1 for primary impact */
    margin-bottom: 20px;
}

h2 {
    /* Ensure h2 naturally wraps without the fixed <br> */
    padding: 0 10px;
    font-weight: 500; /* Lighter weight for secondary text */
    font-size: 1.5rem;
    opacity: 0.8; /* Slightly dimmed for contrast */
    margin-bottom: 40px;
}

.blue {
    /* Keep the vibrant tech color */
    color: #00ffcf;
    text-shadow: 0 0 8px rgba(0, 255, 207, 0.7); /* Stronger glow for highlights */
}

.start {
    padding: 80px 0px; /* More vertical breathing room */
}

/* Responsive Container Styling */
.container {
    /* Use a wider max-width for a more spacious, desktop-like feel */
    max-width: 800px; /* Increased max-width */
    width: 90%;

    font-size: 1.2rem; /* Adjusted for new body font size */
    /* Remove border-radius to match x.ai's sharp, modern corners */
    border-radius: 0;

    /* Centering the Container */
    margin-left: auto;
    margin-right: auto;

    /* Aligning the Content */
    text-align: left;
    padding: 20px 0; /* Adjusted padding */
}

/* Specific adjustment for the list items */
.container ul {
    text-align: left;
    padding-left: 0;
    margin-top: 30px;
}

li {
    /* Use a subtle, modern dash or custom bullet for a minimalist list */
    list-style-type: none; /* Remove default bullet */
    position: relative;
    padding-left: 20px; /* Space for custom bullet */
    margin-bottom: 15px; /* More space between items */
}

li::before {
    content: '—'; /* Use a modern dash as a bullet */
    color: #00ffcf; /* Apply the accent color to the bullet */
    position: absolute;
    left: 0;
    top: 0;
}

footer {
    padding-top: 200px; /* More space */
    font-size: 0.9rem;
    opacity: 0.6; /* Subtle footer */
}

/* ---------------------------------- */
/* MEDIA QUERY for smaller screens (e.g., typical mobile phones) */
/* This will apply styles when the screen is 480px or less */
@media screen and (max-width: 480px) {
    body {
        /* Reduce base font size slightly on very small screens */
        font-size: 16px;
    }

    h3 {
        /* Reduce h3 font size for small screens */
        font-size: 2rem;
    }

    h4 {
        font-size: 1.4rem;
    }

    h1 {
        font-size: clamp(30px, 10vw, 50px);
    }
}

#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    /* Enhanced background: darker and more subtle */
    background: radial-gradient(circle at center, rgba(0, 0, 0, 0.1) 0%, rgba(0, 0, 0, 0.9) 100%);
    /* Adding a subtle star-field-like noise/texture is a common tech site practice, though tricky in pure CSS */
}